#linuxcnc | Logs for 2012-03-10

Back[00:00:04]<archivist> spotted dick
[00:00:22]<Mjolinor> sympathy for you
[00:00:33]<Mjolinor> oh, right, the pudding you mean
[00:01:10]<archivist> toad in the hole
[00:02:28]<Mjolinor> Anyway what about the swedish
[00:02:34]<Mjolinor> they have really odd names for food
[00:02:45]<Mjolinor> and they eat really odd food too
[00:03:07]<Mjolinor> surstromming being a good example, stupid name and how the hell anyone eats it will never know
[00:03:49]<ssi> everything the swedish say sounds weird
[00:03:55]<Mjolinor>http://www.youtube.com/watch?v=hOcSU3gPTYI[00:04:02]<Mjolinor> that gives you soem idea of how it smells
[00:04:26]<archivist>http://www.youtube.com/watch?v=IfeyUGZt8nk[00:05:15]<ssi> lord why
[00:06:52]<ssi> archivist: lolololol
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[03:42:40]<oxiredo_ro> hello
[03:42:49]<oxiredo_ro> hello
[03:43:45]<oxiredo_ro> I want to start making a CNC machine ( i have no experience with this). where can i start this ?
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[03:44:52]<jdhnc> credit cards are a good way to start.
[03:45:15]<oxiredo_ro> hmm...ok
[03:46:24]<jdhnc> what do you want to make with it? What materials? How much room?
[03:48:34]<oxiredo_ro> I want to start with a small one/room.
[03:48:54]<jdhnc> mill? router? lathe? 3d-printer?
[03:49:34]<oxiredo_ro> I sow on youtube a 3d printer, so, a 3d printer
[03:49:45]<oxiredo_ro> i dont know what are the other
[03:51:41]<oxiredo_ro> I realy dont know anything about CNC
[03:53:47]<Tom_itx> want a kit or scratch build one?
[03:54:09]<Tom_itx> i think mendlemax is supposed to be a good one
[03:54:22]<Tom_itx> talk to maxbots in #seattlerobotics if you want
[03:58:29]<oxiredo_ro> tnx fro help, I need to study this more. and also the "credit card issue" :)
[03:59:19]<djdelorie> makerbot and printrbot are other kits you could investigate
[03:59:38]<oxiredo_ro> k, tnx
[04:00:34]<Tom_itx> i'm not into the reprap stuff, i just know maxbots
[04:00:45]<Tom_itx> and that he was working on a kit
[04:01:35]<oxiredo_ro> and how do I integrate those machne with a PC
[04:01:48]<oxiredo_ro> can i make it via microcpntrollers..?
[04:01:59]<oxiredo_ro> or dedicated cnc controllers ?
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[04:02:43]<Tom_itx> some of them use dedicated controllers
[04:02:56]<Tom_itx> like i said, i don't know alot about em
[04:03:05]<Tom_itx> i'd suggest you visit with him
[04:03:22]<Tom_itx> or join #reprap
[04:10:11]<oxiredo_ro> good/night all ! :)
[04:12:25]<theos> night!
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[05:49:57]<ssi> what a pain in the ass
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[07:32:23]<ssi> well, I was successful in letting some of the smoke out of my lathe :D
[07:32:53]* Jymmm notes to NEVER let ssi touch ANYTHING.[07:33:17]<ssi> it was a controlled smoke-letting
[07:33:19]<ssi> anticipated :)
[07:33:34]<Jymmm> NEVER EVER
[07:34:36]<ssi> no great loss :D
[07:35:01]<Jymmm> heh
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[07:59:02]<DJ9DJ> moin
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[08:52:09]<mrsun> hmm this is strange
[08:52:58]<mrsun> when moving positive on my X axis i get exactly 1mm if i set linuxcnc to go 1mm, moving backwards, first step i get exactly 1mm, second time i get 0.95mm, next im back at the 0 mark (so it moves 1.05mm aparently) ... then it goes over again, this is ONLY in the negative direction
[08:53:01]<mrsun> wth is up with that? :/
[08:53:10]<mrsun> ive got 1/8 microstepping if im not mistaking
[08:53:36]<mrsun> that calculates to 0.00125mm/step so it cant be that it just craps on one step its a buttload of stepps it has to not do for that to happend ...
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[08:56:55]<mrsun> have to go, but if anyone feels like trying to answer it ill be back later today =)
[08:57:21]<archivist> lead screw and backlash
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[09:03:47]<Mjolinor> any heekscad help here?
[09:03:57]<Mjolinor>http://www.youtube.com/watch?v=wThpU-XJ19o[09:04:02]<Mjolinor> that's my starting point
[09:04:09]<Mjolinor>http://homepage.ntlworld.com/dknpower/clock.png[09:04:13]<Mjolinor> thats my confusion
[09:04:53]<Mjolinor> as the letters are filled in when extruded I have to subtract them with the "cut one solid form the other"
[09:05:07]<Mjolinor> that works fine on the 9 but not on the 0 of the 10
[09:05:23]<Mjolinor> and why has hte 5 extruded as a shell and not a solid?
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[09:08:20]<archivist> the 5 probably not a joined polygon
[09:08:38]<Mjolinor> ok
[09:08:45]<Mjolinor> it shouldl be I think
[09:10:50]<Mjolinor> it looks like it is, how would I check?
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[09:12:43]<Mjolinor> could take a while comparing the start and end points of all the lines :o
[09:13:45]<archivist> zoom in on the 5 and move around till you see a slit
[09:14:09]<Mjolinor> done that cant see one
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[09:21:41]<Mjolinor> nope, zoomed into the maximum on every corner adn no discontinuities
[09:21:53]<Mjolinor> unless it is in the middle of a straight line but I cant see it
[09:22:14]<cncbasher> did u draw as a dxf ?
[09:23:05]<cncbasher> send it over let's take a look
[09:24:07]<cncbasher> check for other lines on the same layer too
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[12:24:30]<SadMan> in emcrsh.cc
[12:24:31]<SadMan> const char *pToolOffsetStr = "TOOL_OFFSET %d";
[12:24:38]<SadMan> shouldn't this be %f?
[12:24:45]<SadMan> since it's returning tool z offset
[12:26:12]<awallin> or is it the tool number?
[12:27:13]<SadMan> sprintf(context->outBuf, pToolOffsetStr, emcStatus->task.toolOffset.tran.x, emcStatus->task.toolOffset.tran.y, emcStatus->task.toolOffset.tran.z);
[12:27:23]<SadMan> oops, that's my modified version
[12:27:32]<SadMan> there was only .z before
[12:28:18]<SadMan> sprintf(context->outBuf, pToolOffsetStr, emcStatus->task.toolOffset.tran.z);
[12:30:17]<fragalot> 13:21 <slightlymad> pay rise?
[12:30:18]<fragalot> 13:21 <slightlymad> pay rise?
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[13:36:26]<Jymmm> This is so cute, that I can't even come up with a caption for it... http://i41.tinypic.com/2ykaqo1.jpg[13:40:52] -!- RagingComputer has quit [*.net *.split]
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[13:55:56]<fragalot> Jymmm: sad panda is a bunny?
[13:57:24]<archivist> a small meal I suppose
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[14:57:33]<A2Sheds> whats the lowest cost power feed for a manual bridgeport?
[15:00:43]<jthornton> a milk shake can power mine for a while till I get tired
[15:04:23]<A2Sheds> jthornton, do you feEl like standing around someones garage for a few years? I'm pretty sure they can supply the milkshakes
[15:04:55]<jthornton> too busy standing around in my shop :)
[15:05:00]<A2Sheds> heh
[15:05:37]<jthornton> my guess is a used but good one would be the lowest cost
[15:06:11]<A2Sheds> I have an old Cincinnati vertical mill for sale, somebody asked about a power feed for the table
[15:07:07]<jthornton> Enco, Griz and other chinese importers would have the cheapest ones
[15:07:56]<A2Sheds> a shop near me was selling those, 75% came back for warranty issues
[15:08:19]<jthornton> the other 25% were shot on sight?
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[15:08:25]<A2Sheds> hehe
[15:09:02]* jthornton heads back out to the shop[15:23:31]<ssi> JT-Shop: in the shop yet? :D
[15:23:49]<JT-Shop> yep, draining the plasma tank :)
[15:24:03]<ssi> I played the power game last night
[15:24:15]<ssi> I was hesitant to use the VFD, so I tried to power it up using a static
[15:24:18]<JT-Shop> who won?
[15:24:23]<ssi> mostly the lathe
[15:24:30]<ssi> the static wouldn't kick on
[15:24:47]<ssi> so I grabbed a little 1hp 3ph motor that I have and tried to make a rotary converter
[15:24:56]<ssi> got that working
[15:25:02]<JT-Shop> cool
[15:25:14]<ssi> flip the breaker, motor comes on, turn on the master on the lathe, and I get a red light on the control, and nothing else
[15:25:20]<ssi> plus... smoke from a filter :D
[15:25:23]<ssi> even the rotary did it
[15:25:48]<ssi> meanwhile the static was on the wall clackin away sounding all unhappy
[15:25:54]<ssi> so I shut it back down and hooked it up with the VFD
[15:26:18]<ssi> same thing... only this time the filter that was smoking actually caught on shitting fire
[15:26:33]<ssi> so I removed all the filters out of the power enclosure
[15:26:43]<ssi> and realized that the interface encloseure was open, and there's an interlock
[15:26:46]<ssi> so I closed that and tried again
[15:26:49]<ssi> this time I got much more
[15:26:54]<JT-Shop> I did the same after smoking one or two
[15:27:08]<ssi> more lights on the control, control fans spinning
[15:27:13]<JT-Shop> cool
[15:27:14]<ssi> now it just sits there and blinks "COLLET OPEN" at me
[15:27:23]<ssi> I'm guessing it won't budge until I have air attached
[15:27:27]<JT-Shop> blink back
[15:27:47]<JT-Shop> yea, no air, no coolant, no no no and you don't run
[15:27:55]<ssi> coolant too?
[15:27:57]<ssi> how do it know? :(
[15:28:17]<JT-Shop> mine has a float switch in the coolant tank, and the oiler and and and
[15:28:22]<ssi> bluhhhh
[15:28:29]<ssi> what do you run for coolant in yours
[15:29:13]<JT-Shop> Valcool VPTech
[15:29:40]<ssi> oil based?
[15:30:08]<JT-Shop> water soluble looks like blue toilet water when fresh
[15:30:15]<ssi> ah ok
[15:30:28]<JT-Shop> only bad thing is it doesn't taste like beer
[15:30:33]<ssi> I was hoping to use straight oil based coolant,
[15:30:37]<ssi> but because of the capacity and the price
[15:30:40]<ssi> I may end up reneging on that
[15:30:53]<JT-Shop> I think cradek uses neat oil in his
[15:30:58]<ssi> neat oil?
[15:31:00]<ssi> is that an actual name?
[15:31:05]<ssi> or just a descriptive adjective :D
[15:31:14]<JT-Shop> you don't cut it with anything
[15:31:21]<ssi> Neatsfoot oil is a yellow oil rendered and purified from the shin bones and feet (but not the hooves) of cattle
[15:31:35]<JT-Shop> not the same thing lol
[15:31:37]<ssi> teheheheh
[15:31:48]<ssi> Neat cutting oils are fluids usually based on mineral oils and used for cutting without further dilution i.e. as supplied by the manufacturer
[15:32:01]<JT-Shop> so you just drip it onto the part as you cut instead of flooding
[15:32:15]<ssi> what do you usually cut oils with?
[15:32:31]<ssi> I use mobilmet out of a hand bottle, and I really like the stuff
[15:32:52]<JT-Shop> is it straight from the bottle?
[15:33:08]<ssi> the way I've been using it, yes
[15:33:12]<ssi> I put it in a little hand oil can
[15:33:17]<ssi> and squirt it directly on my parts
[15:33:26]<ssi> but it's pretty viscous for flood coolant
[15:34:48]<ssi> I mostly don't want water soluble coolant because I don't like the way it rots
[15:34:50]<JT-Shop> which mobilmet do you use
[15:34:51]<ssi> heh
[15:35:05]<ssi> I'll have to go check
[15:35:20]<JT-Shop> I see a bunch to choose from...
[15:36:36]<ssi> 426
[15:38:37]<JT-Shop> I think I'll get a gallon for the BP knee mill
[15:38:50]<ssi> I've been pretty happy with it so far
[15:38:53]<ssi> makes parting much easier
[15:40:00]<JT-Shop> cool, parting is a pain on the old Samson manual lathe
[15:40:12]<JT-Shop> I need a scatter shield for it...
[15:42:05]<JT-Shop> wonder if something like this http://www.mcmaster.com/#squirt-bottles/=glpxka would be better than a cheap leaking oil can
[15:42:22]<ssi> ok so...
[15:42:25]<ssi> oh jeez
[15:42:32]<JT-Shop> wow
[15:42:43]<ssi> yea that'd be pretty good
[15:42:53]<ssi> also
[15:42:53]<ssi>http://www.mcmaster.com/#mobilmet-oil/=glpyd8[15:42:57]<ssi> that's why I have 426
[15:43:01]<ssi> because it's what mcmaster carries :D
[15:43:19]<JT-Shop> I just ordered it :)
[15:43:35]<ssi> 55 gal drum of it is $1020
[15:43:45]<ssi> :(
[15:43:49]<ssi> your lathe hold 9gal like mine?
[15:44:12]<JT-Shop> 30-35 gallons
[15:45:05]<JT-Shop> 30 gallons, just looked
[15:46:58]<ssi> holy crap
[15:47:32]<ssi> hm I wish I knew which oil cradek was using
[15:47:55]<JT-Shop> he told me once but I could not find it anywhere
[15:48:21]<JT-Shop> but I'm sure if we keep calling cradek he will pop in and tell you
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[15:57:20]<ssi> if you say his name three times, he appears?
[15:57:24]<ssi> cradek cradek cradek
[15:58:35]<ssi> btw the backside off all the boards in this GE control is freakin WIRE WRAPPED
[15:58:44]<ssi>http://a2.sphotos.ak.fbcdn.net/hphotos-ak-ash4/431058_808115768072_71107655_35459254_823586676_n.jpg[15:58:47]<ssi> terrifying
[16:00:04]<JT-Shop> wow
[16:00:45]<JT-Shop> I think that only works when you call Peter 3 times
[16:01:01]<ssi> mesa peter?
[16:01:06]<JT-Shop> yea
[16:01:09]<ssi> pcw pcw pcw
[16:01:51]<ssi> I bought some barstock to make extension holders with
[16:01:55]<ssi> not too terrible spendy
[16:02:31]<ssi> know of a good source for t-bolts for those, or will I have to make them too?
[16:02:49]<ssi> mcmaster to the rescue, eh
[16:02:50]<JT-Shop> only source I've seen is Hardinge
[16:03:06]<JT-Shop> I've not found them anywhere and gave up looking
[16:03:06]<ssi>http://www.mcmaster.com/#square-head-tooling-component-t-slot-bolts/=glq7qu[16:03:12]<ssi> dunno if those'll work
[16:03:56]<JT-Shop> didn't see them before
[16:06:03]<JT-Shop> do you have any T bolts to copy from?
[16:07:49]<JT-Shop> 91622A116 might work
[16:08:16]<ssi> I have a couple holders coming that'll have t bolts
[16:08:25]<ssi> I think all the holders I have now are C10 style and have the integral T
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[16:19:36]<joe9> with the latency test, the max jitter (servo thread) is 7404 ns and the base thread is 7482 ns. Is that within limits?
[16:19:45]<joe9> alex4nder: any thoughts, please?
[16:19:56]<joe9> just checking out linuxcnc on a new pc for the first time.
[16:20:32]<JT-Shop> there are no limits per say, but that is excellent if you have let it run for a few hours
[16:20:50]<joe9> no, that was just for 5 mins or so. will let it run for longer.
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[16:52:41]<joe9> i have the ubuntu live cd, but it dose not recognise the raid partititons. I cannot seem to find the mdadm executable in /sbin or /bin.
[16:52:54]<joe9> linuxcnc ubuntu live cd, I mean.
[16:53:13]<joe9> sudo which mdadm does not return anything
[16:53:27]<joe9> aptitude install mdadm says that the package is already installed.
[16:53:39]<ssi> just a path issue then?
[16:53:44]<ssi> try find / -name mdadm
[16:53:48]<ssi> will take awhile
[16:53:53]<ssi> or find /usr -name mdadm
[16:54:16]<joe9> ok, thanks.
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[17:23:37]<psha> joe9: mdadm is in sbin
[17:23:39]<psha> not in bin
[17:23:52]<ssi> that explains that :D
[17:23:53]<psha> usually /sbin/mdadm
[17:24:21]<Mjolinor> is there a "usually" I generally find it pretty random :)
[17:24:34]<Mjolinor> it is always in the last palce you look that's for sure
[17:26:49]<ssi> /sbin, /usr/sbin, etc are typically binaries that only root is expected to ever use
[17:26:59]<ssi> so only root typically has them in path
[17:27:25]<ssi> if you're the kind of user that likes to do everything with sudo, you might consider putting them in path
[17:29:28]<joe9> in my case, I have a non-working installation on the disks (raid1). I do not know if aptitude looks at that to see if mdadm is installed.
[17:29:34]<joe9> but, I do not see mdadm binary in /
[17:30:22]<joe9> "a volume with software packages has been detected" it says, when I start using the livecd.
[17:30:42]<joe9> is it common? is it referring to the livecd volume or the volume in the disks.
[17:31:18]<joe9> when I try to partition the disks, it lists the "ext4, ext3 .. " filesystem, but not a raid-1 partition there.
[17:33:28]<psha> joe9: raid1 just looks like ordinary partition
[17:33:34]<psha> but with mdadm superblock in the end
[17:34:02]<joe9> oh, ok. but, if I partition the disk as ext4, it will not be a raid-1 disk anymore. correct?
[17:34:26]<joe9> psha: the raid-1 disks show up as "unknown filesystem" but, with the flags "boot, raid" setup
[17:35:52]<psha> it depends on your luck :)
[17:36:00]<psha> probably it won't kill superblock in the end
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[17:53:56]<hatch789> hey guys, I'm just using my X&Y axis right now but my g-code has some Z stuff in it. Is there an easy way (a command or something?) to ignore the Z axis follow errors?
[17:54:57]<jthornton> nope
[18:04:43]<hatch789> so what do I do then with my g-code? somehow remove all z commands?
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[18:08:37]<jthornton> yea, or change your configuration
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[18:25:05]<Mjolinor>http://www.youtube.com/watch?v=aMqM13EUSKw[18:25:08]<Mjolinor> is that for real?
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[18:46:10]<psha> Mjolinor: deformations looks real
[18:47:02]<psha> but i don't know if golf ball may survive so serious deformations without breaking
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[19:13:06]<jthornton> this one is real http://www.youtube.com/watch?v=00I2uXDxbaE&feature=related[19:26:55] -!- DJ9DJ [DJ9DJ!~Deejay@unaffiliated/dj9dj] has joined #linuxcnc
[19:27:10]<DJ9DJ> re-namd
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[19:45:03]<Jymmm> 2" wide cloth tape other than duct tape?
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[19:51:34]<fragalot> Jymmm: pattex power tape!
[19:51:34]<fragalot> :3
[19:51:43]<Jymmm> ?
[19:52:20]<fragalot> cloth tape other than duct tape
[19:52:35]<Jymmm> what is pattex
[19:54:17]<fragalot> brand
[19:54:22]<fragalot> makes glue & stuff
[20:01:30]<Jymmm> where do you usually find it?
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[20:13:19]<Tecan> where do i set the /usr/src/linux-headers-3.0.0-13-lowlatency path ?
[20:13:33]<Tecan> configure: error: version.h not found - Is the kernel headers package installed ?
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[20:18:38]<Tecan> in the configure i guess
[20:24:44]* JT-Shop loves reading questions that I have no clue as to what they are talking about :?[20:36:29]<archivist> yet another doing it the hard way probably
[20:37:04]* archivist drinking coffee listening to the lathe screw cutting[20:37:33] -!- mhaberler [mhaberler!~mhaberler@195.191.253.94] has joined #linuxcnc
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[20:42:11]* djdelorie worries about his math...[20:42:14]<gene77> Anybody home?
[20:42:33]<djdelorie> scope says 7 divs at 50 mV/div across a 5 mR current sense resistor
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[20:42:53]<djdelorie> for about 5 mS
[20:43:14]<gene77> My A axis isn't running, need .hal help I think
[20:43:33]<djdelorie> am I really pushing 70 AMPS into the motor?
[20:45:20]<djdelorie> winding resistance is 5.6 R, at 60V I shouldn't be able to push more than 10 amps...
[20:46:56]<djdelorie> data logged from within the controller show a more reasonable 8 amps peak
[20:47:13]<JT-Shop> hi gene77
[20:47:27]<gene77> 10.7142857143 amps to be exact
[20:47:35]<gene77> hi, hal help?
[20:47:44]<JT-Shop> hi Hal
[20:48:04]<JT-Shop> what's up gene77
[20:48:19]<djdelorie> I'm thinking, it's triggering off just when I switch the drive transistors from "forward" to "active brake" and I'm reading back EMF
[20:48:52]<gene77> axis isn't moving, command its not getting thru the hal meter past the tp & enable signals
[20:49:11]<gene77> A axis isn't moving, command its not getting thru the hal meter past the tp & enable signals
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[20:52:25]<JT-Shop> is it connected just like the rest of the axes?
[20:53:00]<gene77> I think so, and it was working a couple months ago
[20:53:34]<gene77> and I don't recall changing anything except the spindle stuff since
[20:54:07]<gene77> WHat keyboard keys are supposed to jog it?
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[20:57:33]<gene77> section 4.3.5.1 says [], what is the next step looking with hal meter?
[21:00:46]<JT-Shop> ok, so it worked then you changed something in your hal file and it broke?
[21:00:59]<JT-Shop> is it axis 4?
[21:01:55]<gene77> ISTR that is probably when, stepconfig got the direction logic wrong. No, its axis 3 in the hal meter menu
[21:03:14]<gene77> And the "[]" keys are being ignored now.
[21:03:46]<JT-Shop> stepper?
[21:04:10]<gene77> yes, motor is enabled and locked
[21:04:41]<JT-Shop> do you see any steps change on axis 3 stepgen in the watch window?
[21:04:47]<gene77> no
[21:06:19]<JT-Shop> does the A axis show up on the DRO?
[21:06:34]<JT-Shop> assuming your using the Axis GUI
[21:06:36]<gene77> yes
[21:06:41]<gene77> yes
[21:07:09]<JT-Shop> what happens when you do a MDI command for the A axis
[21:07:51]<archivist> gene77, jog is [ and ] iirc
[21:08:28]<gene77> USRMOT: ERROR: invalid command
[21:08:29]<gene77> Linear move in MDI would exceed joint 3's positive limit
[21:08:40]<gene77> wtH?
[21:08:59]<gene77> lemme recheck the .ini!
[21:10:39]<gene77> its spec'd as angular
[21:10:57]<JT-Shop> yea, something is not quite right
[21:11:36]<JT-Shop> what is ISTR?
[21:11:58]<gene77> with min and maxlimits=0, does that not mean continuous?
[21:12:44]<gene77> I Seem To Recall John
[21:12:55]<gene77> :)
[21:20:45]<gene77> I just tried the MDI g0a-10, and got the same msg, negative limit
[21:22:56]<gene77> so apparently having the limits set at 0,0 is a no-no?
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[21:33:28]<djdelorie> hmmm... what is an average "fast" inches/sec for a cnc cutter?
[21:33:55]<djdelorie> check my math: 100 oz-in torque driving a 3/8-16 screw, pushes 314 lbs ?
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[21:36:47]<gene77> for a ball screw maybe
[21:37:44]<djdelorie> I mean, without considering friction. Just want to make sure the ratios aren't backwards or my math is missing a step
[21:39:30]<gene77> my math isn't as good as yours DJ. With a 425 on a 10 tpi acme, and a 17/42 gear down, I can hit 155 lbs on my z axis when the motor is tapped out
[21:40:12]<gene77> lots of friction in the acme
[21:40:29]<djdelorie> gear down increases torque to 1050, yes?
[21:41:18]<djdelorie> is that 425 oz-in?
[21:41:32]<djdelorie> and I think the diameter of the acme screw needs to be known too...
[21:42:45]<gene77> yes, but may not be getting full current, its an 8 wire motor, wired in series, and getting about 2.34 a phase, says 5 amps running unipolar
[21:42:49]<JT-Shop> gene77: IIRC for angular set the limits to some insane value for + and -
[21:43:19]<mrsun> archivist, but in one direction it works fine, 4 steps in one direction, each is exactly at 0, 4 steps in theo ther direction first is exactly spot on (have backlash compensation) then next is 0.95, next is 1.05, next is 0.95 .. all in the same direction, i do not change direction at any time
[21:44:30]<djdelorie> my screw rod is "local hardware store" so I probably have even more friction :-)
[21:44:34]<JT-Shop> djdelorie: are you calculating stepper torque?
[21:44:42]<archivist> mrsun, drunk thread on the screw
[21:44:53]<djdelorie> at the moment, I'm trying to figure out a realistic limit to winding current for my firmware
[21:44:57]<mrsun> archivist, heh ? :P
[21:44:58]<gene77> I was told that a 0 disables that, and its been zero zero for a long time John, years even. This however is the master-rt branch 2.60.something
[21:45:01]<JT-Shop> LOL
[21:45:06]<gene77> chuckle
[21:45:30]<JT-Shop> yea, I may be full of shit about that and not know it :/
[21:45:31]<archivist> mrsun, technical term for a bad helix on a thread
[21:45:36]<djdelorie> I mean, if I run all three motors at "peak current" at the same time, I'd need a 4 KWatt power supply...
[21:45:38]<Jymmm>http://i44.tinypic.com/4keova.jpg[21:45:51]<mrsun> archivist, but shouldnt that show up in both directions?
[21:45:56]<djdelorie> ...but that's way overkill for the *actual* power needs of a small cnc table.
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[21:46:43]<JT-Shop> so just for shits and grins put a number in your limits and see if your A takes off
[21:46:44]<archivist> mrsun, I would expect so but depends on the error
[21:47:04]<mrsun> i was more thinking if its due to linuxcnc skipping some steps cause its "close enough" =)
[21:47:14]<djdelorie> I have 2 amps available, if I limit to 0.6 amps per motor, that's (in theory) still 30 oz-in per motor. Or I could limit to 2 amps per motor, and monitor the power supply volts as well
[21:47:25]<archivist> mrsun, that does not happen
[21:47:36]<mrsun> archivist, ok good i got that sorted atleast =)
[21:47:40]<gene77> that reminds me of a rancher south of Rapid City, called up the wind cave rangers and told them to come and get their 8 buffalo that were demolishing his haystacks.
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[21:48:19]<gene77> He did that for a week, but finally said to come and get 7. They were there an hour later.
[21:49:12]<JT-Shop> arggg, there is nothing in the manual about setting limits to 0 for an angular axis
[21:49:25]<archivist> I just did my first cnc lathe internal thread, about time too one might say
[21:49:54]<djdelorie> where do you put the limit switch on a mobius strip ?
[21:49:55]<JT-Shop> single point thread or tap?
[21:50:05]<archivist> single point
[21:50:08]<JT-Shop> cool
[21:50:49]<archivist> dont adjust motor speed while threading..something missed a beat
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[21:51:28]<JT-Shop> I don't touch anything while threading :)
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[21:53:56]<gene77> and of course that linuxcnc shutdown crashed the box, requiring a power cycle, but yes John, that did indeed fix it
[21:55:45]<gene77> Now I need to go find some 1" 5/16 USS bolts, drill a couple of holes in a plastic bowl, set the table in it on edge, and fill it up with k1 for coolant. ;-)
[21:56:31]<DJ9DJ> gn8
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[22:04:34]<JT-Shop> Gene I thought I remember Andy saying something about that on the forum a while back
[22:06:50]<gene77> there was a way to make a rotary axis continuous, once, maybe not anymore
[22:12:55]<JT-Shop> well setting it to wrapped rotary it goes 0 - 359.999 degrees
[22:13:44]<archivist> rotary does need some work to make it universally useful
[22:15:01]<archivist> one needs to be able to do multiple revs AND go to the nearest 0 deg instead of winding back
[22:15:25]<JT-Shop> make is sexy and maybe psha will work onit
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[22:18:41]<JT-Shop> I'm hoping I find a bad termination in the plasma power box :/ here goes
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[22:20:54]<djdelorie> archivist: I can imagine trying to "home" a lathe, and having it spin for minutes...
[22:22:25]<JT-Shop> ah sweet a loose wire
[22:22:43]<Tecan> why does hal have to be enabled ?
[22:24:07]<Tecan> i got a rt kernel without one for 11.04
[22:24:39]<Tecan> rtai is requiring it to compile the kernel modules
[22:30:18]<archivist> djdelorie, I have a slow rotary on the 5 axis and returning to the start point is "slow"
[22:31:03]<djdelorie> I meant, if it had to "unwind" a couple thousand rotations to "home" a rotary axis, that would be... less than useful.
[22:31:42]<archivist> currently a rotary axis can be like that
[22:31:55]<archivist> grmbl
[22:32:47]<gene77> grmbl is mild
[22:33:41]<archivist> now where are my bore gauges...even internal calipers
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[23:11:02]<hatch789> what is the mdi command to zero the axis right where they are now?
[23:14:12]<GoSebGo> hatch789: i dont know off the top of my head, but i bet the answer is somewhere in this doc: http://www.linuxcnc.org/docs/2.5/html/gcode/coordinates.html[23:15:24]<JT-Shop> hatch789: http://linuxcnc.org/docview/2.5/html/common/User_Concepts.html[23:16:14]<JT-Shop> hatch789: do you wish to set the machine origin or an offset?
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[23:25:08]<hatch789> just to zero X&Y right where it is. not home them ...already homed
[23:25:50]<cradek> typically you'd use the Touch Off function, but you can do it in mdi as well; check section 3.2 in the link from Seb
[23:27:39]<JT-Shop> cradek: did you see ssi asking what cutting oil you used?
[23:27:48]<cradek> no
[23:28:01]<cradek> the stuff I have in the lathe I don't think is available anymore
[23:28:08]<cradek> it's some soybean-based thing
[23:28:22]<JT-Shop> I never could find it when you told me what it was
[23:28:35]<Tom_itx> whale blubber
[23:28:38]<cradek> yeah I think they're gone
[23:28:46]<cradek> I can't remember the name of it
[23:29:21]<JT-Shop> I did find some soy oil based stuff but by that time I had all ready gone with ValCool
[23:29:43]<Tom_itx> maybe for food processing equipment?
[23:30:14]<cradek> it smells kind of like french fries
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[23:30:22]<cradek> very inoffensive smell
[23:31:07]<JT-Shop> maybe I got dyslexic and connected the wires backwards from the plasma tip voltage... I guess I'll take it back apart again :/
[23:31:40]<JT-Shop> too bad the ValCool doesn't taste like beer...
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